Question

I am trying to write to a file in an Android app with this code:

File save = new File("sdcard/save.txt"); 
if(!save.exists()) {
    try {
        save.createNewFile();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

try {
    FileOutputStream fos = new FileOutputStream(save);
    OutputStreamWriter osw = new OutputStreamWriter(fos);

    osw.write("1");
    osw.flush();
    osw.close();
} catch (FileNotFoundException e1) {
    e1.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
}

However, my debugger goes to the IOException after the line osw.close();

The problem is by that stage e doesn’t exist, so I cant read the exception message.

I added the right premission in the androidManifest.xml

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

but it doesn’t work.

Answer 1

 File save = new File("sdcard/save.txt"); is bad code   

use below code

String path= Environment.getExternalStorageDirectory().getAbsolutePath();
String fileName = "myFile.txt";

File file = new File(path + File.separator + fileName);